Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:109300
User-Agent: Microsoft-MacOutlook/16.35.20030802
Date: Wed, 25 Mar 2020 17:22:11 +0100
To: <internals@lists.php.net>
Message-ID: <21C8B270-FD87-4B0E-A203-7E6850B13ED1@me.com>
Thread-Topic: [PHP-DEV] [RFC] switch expression
References: <047092C7-84FB-42AB-8084-7B83F76F55C1@me.com>
 <CABdc3WrX2M565H6af7axCgy=Kavairac8iVN4EkgtVCbu0H1mA@mail.gmail.com>
 <4513B88E-CA5B-4DF2-94C8-242BEE54ADCC@me.com>
 <767910ef-d27b-404c-9ad1-037105c69d12@www.fastmail.com>
 <2E98378A-605D-40ED-898C-6ABBFBD091B9@me.com>
 <b5ec4411-6882-4e3a-a0bc-61cce5abfd0d@www.fastmail.com>
 <13054915-92e1-2723-2db7-fa13376ffecb@birkholz.biz>
In-Reply-To: <13054915-92e1-2723-2db7-fa13376ffecb@birkholz.biz>
Mime-version: 1.0
Content-type: text/plain;
	charset="UTF-8"
Content-transfer-encoding: 7bit
Subject: Re: [PHP-DEV] [RFC] switch expression
From: ilija.tovilo@me.com (Ilija Tovilo)

Hi Dennis

Thanks for your feedback!

> you can fall through to other cases without break

You could do the same using the || operator.

> what about the default case?

I haven't described the default case in my proposal but it is exactly what you'd expect it to be:

```php
$var = true switch {
    $x > 0 => 1,
    $x < 0 => -1,
    default => 0,
};
```

> What about the following if-expression-syntax:

That would work (once again, Rust already does it) though not with the return keyword. We'd still need a block expression to pass the value from the block to the if expression. When I compare the two I definitely think the match expression is more readable.

Regards